US PATENT SUBCLASS 220 / 203.09
.~.~.~ Relatively movable closure and receptacle rim parts

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
202  DF  .~ With condition responsive vent or valve {1}
203.01  DF  .~.~ Responsive to pressure {10}
203.09.~.~.~ Relatively movable closure and receptacle rim parts {1}
203.1  DD  .~.~.~.~> Closure is spring-biased

DEFINITION

Classification: 220/203.09

Relatively movable closure and receptacle rim parts:

(under subclass 203.01) Device wherein the vent or valve comprises a closure part which is moveable with respect to (a) the rim of a receptacle with which it coacts or (b) a rimlike part intermediate the closure and receptacle rim.